very basic parser of let statements

src/parser/parser.hpp

@@ -0,0 +1,25 @@
+#pragma once
+
+#include "ast/ast.hpp"
+#include "ast/statements/let.hpp"
+#include "lexer/lexer.hpp"
+#include "token/token.hpp"
+
+namespace parser {
+    struct parser {
+        parser(lexer::lexer& lexer);
+        std::vector<std::string> errors;
+
+        ast::program* parse_program();
+
+      private:
+        lexer::lexer& lexer;
+        token::token current, next;
+
+        void next_token();
+        ast::statement* parse_statement();
+        ast::let* parse_let();
+        bool expect_next(token::type);
+        void next_error(token::type);
+    };
+} // namespace parser